Tunnel construction supporting device

Abstract

The utility model discloses a tunnel construction supporting device, and relates to the technical field of tunnel supporting. Comprising a base and universal wheels, at least two transverse frames are arranged in the middle of the base, two movable shafts are movably connected between the transverse frames, and vertical blocks are fixed to the middles of the transverse frames; a slot is formed in the top of the vertical block, a vertical insertion block is inserted into the slot, a first spring is fixed between the vertical insertion block and the inner wall of the slot, and a first abutting head is fixed to the top end of the vertical insertion block. The device is provided with the first pressing head, the second pressing head, the movable roller and the driving assembly, the arc-shaped supporting plate with the corresponding radian is selected according to different template radians, the arc-shaped supporting plate is directly placed on the top of the first pressing head and the top of the second pressing head, and the first pressing head and the second pressing head preliminarily support the arc-shaped supporting plate; a worker rotates a hand wheel, and the hand wheel drives a rotating shaft to rotate, so that a movable roller extrudes an arc-shaped supporting plate when moving towards the outer side, and the arc-shaped supporting plate is jacked up.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel support, in particular to a tunnel construction support device. Background Art

[0002] During the construction of the tunnel, it is necessary to set up a casting formwork inside the tunnel and support the formwork through a supporting device to prevent the formwork from deforming, so that a cavity is formed between the tunnel formwork and the tunnel soil layer, and then pour concrete. After the concrete pouring is completed, the tunnel support is disassembled and removed.

[0003] The Chinese utility model patent, authorization announcement number CN 220267725 U, discloses a tunnel construction support device, which is composed of a bottom plate, a support arm and a plug-in assembly. The device can be folded and stored to reduce transportation costs, and is quick and convenient to operate when unfolded, reducing the construction cost of the tunnel.

[0004] The above solution solves the technical problems raised in its background technology, but in practical applications, the above device still has certain defects. For example, the arc support plate in the above device can only adapt to the template corresponding to the curvature of the arc support plate. For templates with different curvatures, the original arc support plate needs to be disassembled before support and an arc support plate compatible with the template curvature needs to be installed, resulting in low installation efficiency and poor applicability. Utility Model Content

[0005] The purpose of the utility model is to provide a tunnel construction support device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tunnel construction support device, comprising a base and universal wheels, wherein at least two horizontal frames are arranged in the middle of the base, two movable shafts are movably connected between the horizontal frames, and a vertical block is fixed in the middle of the horizontal frames;

[0007] A slot is provided on the top of the vertical block, a vertical plug block is inserted into the slot, a first spring is fixed between the vertical plug block and the inner wall of the slot, and a first pressing head is fixed on the top of the vertical plug block;

[0008] A fixed block is fixed on the shaft body of the movable shaft, and a movable roller is movably connected to the top of the fixed block via a connecting shaft;

[0009] A driving assembly is arranged outside the movable shaft, and the movable shaft is driven to rotate by the driving assembly.

[0010] Preferably, a horizontal plate is fixed between the bases on one side, a plurality of hydraulic cylinders are fixed on the horizontal plate, and a stabilizing plate is fixed to the telescopic end of the hydraulic cylinder.

[0011] Preferably, the driving assembly includes a rotating shaft, and worm wheels are fixed to the ends of the two movable shafts. Two worms with opposite worm tooth directions are arranged on the shaft body of the rotating shaft. The two worms are respectively meshed with two worm wheels, and a handwheel is fixed to the end of the rotating shaft extending from the base.

[0012] Preferably, side support components are provided on both sides of the vertical plug block;

[0013] The side support assembly comprises an inclined block, a top of the inclined block is provided with an inclined slot, an inclined insert block is movably inserted in the inclined slot, and a second spring is fixed between the inclined insert block and the inner wall of the inclined slot;

[0014] A second pressing head is fixed on the top end of the oblique inserting block.

[0015] Preferably, the angle between the oblique insertion block and the vertical insertion block is 30-70°.

[0016] Preferably, the movable roller is made of rubber material.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The tunnel construction support device is provided with a first pressure head, a second pressure head, a movable roller and a driving assembly. An arc-shaped support plate with a corresponding curvature is selected according to different template curvatures. The arc-shaped support plate is directly placed on top of the first pressure head and the second pressure head. The first pressure head and the second pressure head provide preliminary support for the arc-shaped support plate. A worker turns a hand wheel, and the hand wheel drives the rotating shaft to rotate, so that the movable roller is pressed against the arc-shaped support plate when moving outward, thereby lifting the arc-shaped support plate until the arc-shaped support plate is pressed against the tunnel top or the supporting template, thereby completing the support of the tunnel construction. The device does not need to disassemble and assemble the arc-shaped support plate, and can achieve rapid installation of arc-shaped support plates with different curvatures, thereby improving installation efficiency and having good applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 A half-section view of a vertical block of the utility model;

[0021] Figure 3 This is a working state diagram of the utility model.

[0022] In the figure: 1. base; 2. universal wheel; 3. hydraulic cylinder; 4. stabilizing plate; 5. cross frame; 6. movable shaft; 7. fixed block; 8. movable roller; 9. worm gear; 10. rotating shaft; 11. hand wheel; 12. vertical block; 121. vertical plug block; 122. first pressure head; 123. first spring; 13. side support assembly; 131. oblique block; 132. oblique plug block; 133. second spring; 14. arc support plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1-Figure 3 As shown, the utility model provides a technical solution: a tunnel construction support device, including a base 1 and a universal wheel 2, the universal wheel 2 is fixed at the bottom end of the base 1, the universal wheel 2 has a braking performance, according to the support length, at least two cross frames 5 are arranged in the middle of the base 1, and two movable shafts 6 are movably connected between the cross frames 5, a vertical block 12 is fixed in the middle of the cross frame 5, and the two movable shafts 6 are symmetrically arranged on both sides of the vertical block 12. In order to improve the stability of the base 1 during use, a cross plate is fixed between the bases 1 on one side, and a plurality of hydraulic cylinders 3 are fixed on the cross plate. A stabilizing plate 4 is fixed to the telescopic end of the hydraulic cylinder 3. When supporting, the hydraulic cylinder 3 is controlled to extend by a controller until the stabilizing plate 4 is squeezed against the ground.

[0025] A slot is provided at the top of the vertical block 12, a vertical insert block 121 is inserted into the slot, a first spring 123 is fixed between the vertical insert block 121 and the inner wall of the slot, and a first pressing head 122 made of rubber material is fixed at the top of the vertical insert block 121;

[0026] In order to ensure the stability of the arc-shaped support plate 14 placed on the top of the first pressure head 122 and prevent it from sliding to both sides, side support components 13 are provided on both sides of the vertical plug block 121. Figure 1 and Figure 2 As shown, the side support assembly 13 includes an inclined block 131, a bevel groove is opened at the top of the inclined block 131, an inclined plug block 132 is movably inserted in the inclined groove, and a second spring 133 is fixed between the inclined plug block 132 and the inner wall of the inclined groove. In addition, a second pressure head made of rubber material is fixed to the top of the inclined plug block 132. The first pressure head 122 and the second pressure head are made of rubber material to increase the friction between the first pressure head 122 and the second pressure head and the arc support plate 14, thereby further increasing the placement stability of the arc support plate 14.

[0027] In this solution, the angle between the oblique insert block 132 and the vertical insert block 121 is 30-70°. In a specific embodiment, the angle between the oblique insert block 132 and the vertical insert block 121 is set to 60° to achieve triangular support for the side support assembly 13.

[0028] A fixed block 7 is fixed on the shaft body of the movable shaft 6, and a movable roller 8 is movably connected to the top of the fixed block 7 through a connecting shaft. In order to prevent the movable roller 8 from squeezing the arc support plate 14 and causing damage to the inner side of the arc support plate 14, in this solution, the movable roller 8 is made of rubber material.

[0029] A driving assembly is arranged outside the movable shaft 6, and the movable shaft 6 is driven to rotate by the driving assembly.

[0030] Specifically, Figure 1 As shown, the driving assembly includes a rotating shaft 10, and worm wheels 9 are fixed to the ends of the two movable shafts 6. Two worms with opposite worm tooth directions are arranged on the shaft body of the rotating shaft 10. The two worms are respectively meshed with the two worm wheels 9. A handwheel 11 is fixed to the end of the rotating shaft 10 extending from the base 1, so that the rotating shaft 10 can drive the two worm wheels 9 to rotate in opposite directions when it rotates.

[0031] When in use, the device is moved to the supporting position, and the hydraulic cylinder 3 is controlled to extend by the controller until the stabilizing plate 4 is pressed against the ground, and the arc-shaped support plate 14 adapted to the tunnel top or the support template is placed on the top of the first pressing head 122. At this time, the first spring 123 and the second spring 133 are contracted, and the first pressing head 122 and the second pressing head are pressed against the arc-shaped support plate 14 to achieve support for the inner side of the arc-shaped support plate 14. Figure 3 As shown, at this time, the movable roller 8 is located on the inner side of the arc-shaped support plate 14 and has no contact with the arc-shaped support plate 14. The staff rotates the hand wheel 11, and the hand wheel 11 drives the rotating shaft 10 to rotate. Since the two worm gears arranged on the shaft body of the rotating shaft 10 are in opposite directions, the movable shaft 6 and the fixed block 7 rotate in opposite directions. When the movable roller 8 moves outward, it is pressed against the arc-shaped support plate 14, thereby lifting the arc-shaped support plate 14 until the arc-shaped support plate 14 is pressed against the tunnel top or the support formwork, thereby completing the support of the tunnel construction.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A tunnel construction support device, comprising a base (1) and a universal wheel (2), characterized in that: The base (1) is provided with at least two horizontal frames (5) in the middle, two movable shafts (6) are movably connected between the horizontal frames (5), and a vertical block (12) is fixed in the middle of the horizontal frames (5); A slot is provided at the top of the vertical block (12), a vertical insert block (121) is inserted into the slot, a first spring (123) is fixed between the vertical insert block (121) and the inner wall of the slot, and a first pressing head (122) is fixed at the top of the vertical insert block (121); A fixed block (7) is fixed on the shaft body of the movable shaft (6), and a movable roller (8) is movably connected to the top of the fixed block (7) via a connecting shaft; A driving assembly is arranged outside the movable shaft (6), and the movable shaft (6) is driven to rotate by the driving assembly.

2. A tunnel construction support device according to claim 1, characterized in that: A transverse plate is fixed between the bases (1) on one side, a plurality of hydraulic cylinders (3) are fixed on the transverse plate, and a stabilizing plate (4) is fixed to the telescopic end of the hydraulic cylinder (3).

3. A tunnel construction support device according to claim 1, characterized in that: The driving assembly comprises a rotating shaft (10), the ends of the two movable shafts (6) are both fixed with worm wheels (9), the shaft body of the rotating shaft (10) is provided with two worms with worm teeth in opposite directions, the two worms are respectively meshed with the two worm wheels (9), and a hand wheel (11) is fixed to the end of the rotating shaft (10) extending out of the base (1).

4. A tunnel construction support device according to claim 1, characterized in that: Side support components (13) are provided on both sides of the vertical insertion block (121); The side support assembly (13) comprises an inclined block (131), a top of the inclined block (131) is provided with an inclined groove, an inclined insert block (132) is movably inserted in the inclined groove, and a second spring (133) is fixed between the inclined insert block (132) and the inner wall of the inclined groove; A second pressing head is fixed on the top end of the oblique insertion block (132).

5. A tunnel construction support device according to claim 4, characterized in that: The angle between the oblique insert block (132) and the vertical insert block (121) is 30-70°.

6. A tunnel construction support device according to claim 4, characterized in that: The movable roller (8) is made of rubber material.

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